imp(evm): stateless custom precompiles (#1272)

* release: v0.17.0 changelog (#1153)

* release: v0.17.0 changelog

* rm newline

* update link

* imp(evm): EVM interface

* fixes

* fix lint

* fix lint pt 2

* initial wiring for stateful contracts

* Apply suggestions from code review

Co-authored-by: Vladislav Varadinov <vladislav.varadinov@gmail.com>

* changelog

* comments from review

* lint

Co-authored-by: Vladislav Varadinov <vladislav.varadinov@gmail.com>

app/ante/eth.go

@@ -305,7 +305,7 @@ func (ctd CanTransferDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate
 
 		// check that caller has enough balance to cover asset transfer for **topmost** call
 		// NOTE: here the gas consumed is from the context with the infinite gas meter
-		if coreMsg.Value().Sign() > 0 && !evm.Context.CanTransfer(stateDB, coreMsg.From(), coreMsg.Value()) {
+		if coreMsg.Value().Sign() > 0 && !evm.Context().CanTransfer(stateDB, coreMsg.From(), coreMsg.Value()) {
 			return ctx, sdkerrors.Wrapf(
 				sdkerrors.ErrInsufficientFunds,
 				"failed to transfer %s from address %s using the EVM block context transfer function",

app/ante/interfaces.go

@@ -11,6 +11,7 @@ import (
 	"github.com/ethereum/go-ethereum/params"
 	"github.com/evmos/ethermint/x/evm/statedb"
 	evmtypes "github.com/evmos/ethermint/x/evm/types"
+	evm "github.com/evmos/ethermint/x/evm/vm"
 	feemarkettypes "github.com/evmos/ethermint/x/feemarket/types"
 )
 
@@ -26,7 +27,7 @@ type EVMKeeper interface {
 	statedb.Keeper
 	DynamicFeeEVMKeeper
 
-	NewEVM(ctx sdk.Context, msg core.Message, cfg *evmtypes.EVMConfig, tracer vm.EVMLogger, stateDB vm.StateDB) *vm.EVM
+	NewEVM(ctx sdk.Context, msg core.Message, cfg *evmtypes.EVMConfig, tracer vm.EVMLogger, stateDB vm.StateDB) evm.EVM
 	DeductTxCostsFromUserBalance(
 		ctx sdk.Context, msgEthTx evmtypes.MsgEthereumTx, txData evmtypes.TxData, denom string, homestead, istanbul, london bool,
 	) (fees sdk.Coins, priority int64, err error)

app/app.go

@@ -106,6 +106,7 @@ import (
 	"github.com/evmos/ethermint/x/evm"
 	evmkeeper "github.com/evmos/ethermint/x/evm/keeper"
 	evmtypes "github.com/evmos/ethermint/x/evm/types"
+	"github.com/evmos/ethermint/x/evm/vm/geth"
 	"github.com/evmos/ethermint/x/feemarket"
 	feemarketkeeper "github.com/evmos/ethermint/x/feemarket/keeper"
 	feemarkettypes "github.com/evmos/ethermint/x/feemarket/types"
@@ -396,7 +397,7 @@ func NewEthermintApp(
 	app.EvmKeeper = evmkeeper.NewKeeper(
 		appCodec, keys[evmtypes.StoreKey], tkeys[evmtypes.TransientKey], app.GetSubspace(evmtypes.ModuleName),
 		app.AccountKeeper, app.BankKeeper, app.StakingKeeper, app.FeeMarketKeeper,
-		tracer,
+		nil, geth.NewEVM, tracer,
 	)
 
 	// Create IBC Keeper